Locking mechanism



May 23, 1967 o. c. ECKEL LOCKING MECHANISM Filed Sept. 28, 1964 2%? I 9l P i I I 42 40 4o 1 2 Sheets-Sheet l y 3, 1967 o. c. ECKEL. 3,321,229

LOCKING MECHANI SM Filed Sept. 28, 1964 2 Sheets-Sheet ig. at $1 .4.

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United States Patent Office 3,321,229 Patented May 23, 1967 3,321,229LOCKING MECHANISM Oiiver C. Ecirel, Qarlisie, Mass. (P-G. Box 226,Cambridge, Mass. 02138) Filed Sept. 28, 1964, Ser. No. 399,526 7 Claims.(Cl. 292-108) This invention relates to locking mechanism.

One object of my invention is to provide locking mechanism which is usedin combination with a locking bar that has provision to receive part ofmy mechanism to effect locking of a double door.

Another object is to provide such a locking bar that may be movablyattached to a door stile so that it can be placed in position forlocking with my mechanism by a mere swinging movement.

A further object is to provide said locking mechanism of such astructure that it is operable from the inside of a room; but not fromthe outside, yet has simple mechanism that can be operated without a keyby a mere turn of a finger.

A still further object is to provide such locking mechanism that isconstructed of relatively simple parts that are easy to assemble andeconomical to manufacture.

The foregoing and other objects which will appear as the nature of theinvention is better understood, may be accomplished by a construction,combination and arrangement of parts such as is disclosed by thedrawings. The nature of the invention is such as to render itsusceptible to various changes and modifications, and therefore, I amnot to be limited to the construction disclosed by the drawings nor tothe particular parts described in the specification; but am entitled toall such changes therefrom as fall within the scope of my claims.

In the drawings:

FIG. 1 is a front elevational View of a double door in combination withmy locking mechanism showing the latter in locked position.

FIG. 2 is an enlarged sectional View taken on the line 2-2 of FIG. 1.

FIG. 3 is an enlarged sectional view taken on the line 33 of FIG. 1.

FIG. 4 is an enlarged sectional view taken on the line 55 of FIG. 1, butshowing the locking mechanism in unlocked position and omitting thelocking bar.

FIG. 5 is a view similar to FIG. 4, but showing the locking bar andlocking mechanism in locked position.

FIG. 6 is an elevational View of a locking wall.

FIG. 7 is an enlarged, fragmentary, front elevational view showing mylocking bar and locking mechanism in locked position.

As illustrated, a double door is shown having two door sections 1) andDD. My locking mechanism has a hollow housing or sleeve 10 there beingtwo mechanisms shown that are mounted in each said door section. Flangesl2 and 14 are at the outer and inner ends respectively of said housingand a tube portion 16 extends between these flanges. Within said tube16, intermediate the ends, is a locking wall 18 having a keyhole whichprovides an elongate slot 20 therein.

An actuating member 22 shown as a bolt has an elongate stem 24 with anoblong-shaped head 26 which is at the inner side of the door when inuse. This stem 24 is threaded as at one end portion and a bearing member30 is welded or otherwise fixed to it at an intermediate point thereofand against which a coil spring 32 bears.

A locking pin 34 is fixed in said bolt stem 24 intermediate oppositeends and extends therethrough and beyond and is freely movable withinthe inner circumference of said spring 32. A stop member 36, shown as anut, is screw-threadedly connected to said threaded portion 28 and itbears against said locking wall 18 only when in locking position asshown in said FIG. 5.

A locking bar 38 is at the upper portion, and inwardly of the doubledoor, extending across and beyond both door sections D and DD. This bar38 extends into the space between said head 26- and said inner flange14. Said bar has an oblong-shaped attaching slot 39 at one side and twooblong-shaped locking slots 40 therethrough that are each adapted toreceive the long part of said bolt head 26 when positioned in alinementwith the long part of a said slot 40. Said head 26 may be rotated fromunlocked position shown in said FIG. 4 so that it takes a lockingposition where it cannot pass through a said slot 40 as illustrated insaid FIGS. 1 and 5.

At the free end of said bar 38 a recess 42 is provided, while at theopposite end a pivot stud 44 passes through said slot 39 in bar 38 andenters a door stile 45 thus pivotally mounting said bar 38 on saidstile. A stud 46 is set in a door stile 57 and enters said bar recess 42when the bar 38 extends across the door sections D and DD as illustratedin said FIG. 1.

A lower locking bar 48 is similar to said bar 38 in structure andpurpose. It has an oblong-shaped slot 49 therethrough at one sidesimilar to slot 39 and also two oblong-shaped slots 56 similar to slots40. A stud 52 is fixedly set in said door stile 45 and a recess 54 isprovided in said bar 48 into which said stud 52 enters when said bar 48is in locking position. A pivot stud 56 is fixed in said door stile 57and extends through said bar 48 and said slot 49, thus pivotallyconnecting said bar 48 to said stile 57. A cap 58 is shown as a coverfor one end of said housing 10.

In operation, the doors D and DD each has one or more housings 10 settherein with the associated parts. Said bolt stem 24 normally extendsinto said tube 16, in unlocked position as shown in said FIG. 4, withsaid coil spring 32 compressed against said locking wall 18 and saidbearing 38'. Said pin 34 bears against said wall 18. Upon rotation ofsaid head 26 about degrees said locking pin 34 will pass through thelarger portion of said keyhole 20. A locking bar 38 or 48 will be movedto horizontal or locking position between said head 34 and [flange 14and said head 26 will pass through a said slot 40 or 50. Then said head26 is turned about 90 degrees to locking position where it extendscrosswise of the smaller portion of the locking bar slot 44} or 50 whichcompletes the locking movement.

To unlock said bar 38 or 48, said head 26 is turned about 90 degrees andis pushed through a said slot 40 or 50, and the bar is lifted. The head26 is then pushed in farther until said pin 34 passes through keyhole 20whereupon said head 26 is turned about 90 degrees to the position shownin said FIG. 4.

I claim:

1. Locking mechanism in combination with a locking bar having anoblong-shaped slot, said mechanism comprising a hollow housing, alocking wall within and fixed to an intermediate portion of said housingand having an elongate slot therethrough, an actuating member extendinginto and movable in said housing and extending through said latter slotembodying a stop member and an oblong-shaped head at opposite endsrespectively thereof, a bearing member fixed to and movable with saidlocking member intermediate said stop member and head, a coil spring insaid housing having opposite ends bearing respectively against saidbearing member and said locking wall, a pin member within the interiorof said spring when in locked position and movable therethrough andfixed in said actuating member at an intermediate portion thereof andextending laterally beyond the periphery thereof and adapted to passthrough the larger portion of said slot and unadapted to pass throughthe smaller portion 3 thereof, said oblong-shaped head being adapted topass through the elongate portion of said locking bar slot and unadaptedto pass through the narrower portion thereof.

2. Locking mechanism as set forth in claim 1, said housing embodyingflanges at opposite ends respectively thereof.

3. Locking mechanism as set forth in claim 1, said actuating member headextending outwardly beyond and spaced from one end of said housing.

4. Locking mechanisms in combination with a double door and a lockingbar, each of said doors having an opening therethrough, said lockingmechanisms being mounted in said openings, said bar having an elongateslot therethrough, said mechanisms each comprising a hollow housingextending into said door opening, a locking wall within and fixed to anintermediate portion of said housing and having an elongate slottherethrough, an actuating member extending into and movable in saidhousing and extending through said locking wall elongate slot embodyinga stop member and an oblong-shaped head at opposite ends respectivelythereof, a bearing member fixed to and movable with said locking memberintermediate said stop member and head, a coil spring in said housinghaving opposite ends bearing against said bearing member and saidlocking wall, a pin member within the interior of said spring when inlocked position and movable therethrough and fixed in said actuatingmember at an intermediate portion thereof and extending laterally beyondthe periphery thereof and adapted to pass through the larger portion ofsaid locking wall elongate slot and unadapted to pass through thesmaller portion thereof, said oblong-shaped head being adapted to passthrough the elongate portion of said locking bar slot and unadapted topass through the narrower portion thereof.

5. Locking mechanisms as set forth in claim 4, said housing embodyingflanges at opposite ends respectively thereof, said oblong-shaped headextending outwardly beyond one of said flanges when in locked position.

6. Locking mechanisms as set forth in claim 4', said oblong headextending outwardly beyond and spaced from said housing in lookingposition, said locking bar being adapted to extend into saidlatter-mentioned space.

7. Locking mechanisms as set forth in claim 4 in combination with a doorstile, and means pivotally attaching said locking bar to said doorstile.

References Cited by the Examiner UNITED STATES PATENTS 313,942 3/1885Knauer 292259 2,379,528 7/1945 Kelliher 292--74 FOREIGN PATENTS 840 1/1898 Great Britain.

MARVIN A. CHAMPION, Primary Examiner.

JOHN R. MOSES, Assistant Examiner.

1. LOCKING MECHANISM IN COMBINATION WITH A LOCKING BAR HAVING ANOBLONG-SHAPED SLOT, SAID MECHANISM COMPRISING A HOLLOW HOUSING, ALOCKING WALL WITHIN AND FIXED TO AN INTERMEDIATE PORTION OF SAID HOUSINGAND HAVING AN ELONGATE SLOT THERETHROUGH, AND ACTUATING MEMBEREXTEND-ING INTO AND MOVABLE IN SAID HOUSING AND EXTENDING THROUGH SAIDLATTER SLOT EMBODYING A STOP MEMBER AND AN OBLONG-SHAPED HEAD ATOPPOSITE ENDS RESPECTIVELY THEREOF, A BEARING MEMBER FIXED TO ANDMOVABLE WITH SAID LOCKING MEMBER INTERMEDIATE SAID STOP MEMBER AND HEAD,A COIL SPRING IN SAID HOUSING HAVING OPPOSITE ENDS BEARING RESPECTIVELYAGAINST SAID BEARING MEMBER AND SAID LOCKING WALL, A PIN MEMBER WITHINTHE INTERIOR OF SAID SPRING WHEN IN LOCKED POSITION AND MOVABLETHERETHROUGH AND FIXED IN SAID ACTUATING MEMBER AT AN INTERMEDIATEPORTION THEREOF AND EXTENDING LATERALLY BEYOND THE PERIPHERY THEREOF ANDADAPTED TO PASS THROUGH THE LARGER PORTION OF SAID SLOT AND UNADAPTED TOPASS THROUGH THE SMALLER PORTION THEREOF, SAID OBLONG-SHAPED HEAD BEINGADAPTED TO PASS THROUGH THE ELONGATE PORTION OF SAID LOCKING BAR SLOTAND UNADAPTED TO PASS THROUGH THE NARROWER PORTION THEREOF.